Even in the face of overwhelming scientific evidence, climate change still has its doubters. But luckily for all of us, plenty of powerful people around the world have dedicated themselves to speaking out about the risks it poses and the need to address it.
Some of these prominent voices, such as President Barack Obama, Pope Francis, and Bill Nye, you already know. But here are 20 other important activists -- who include scientists and actors, as well as political and business leaders -- from around the world.
Scroll down to check them out, and add the names of your favorite activists in the comments below:
- What You Need To Know About The Paris Climate Summit
- After Years Of Lukewarm Climate Talks, Paris Cranks Up The Heat
- How To Talk To A Climate Change Denier
- Watch How Rising Sea Levels Could Swallow Coastal Cities
- Why Some Conservatives Still Won't Accept Climate Change Is Real
- The Devastating Consequences Of A 'Small' Rise In Global Temperatures
- Mayors Take On Crucial Roles Fighting Climate Change
- Why This Goal To Curb Climate Change 'Is Not Ideal'
- Here's All The Nonsense 2016 Republicans Have Spouted About Climate Change
- How Tech Is Pulling Ahead Of Politics In The Fight For Our Future
- These Will Be The Biggest Losers If We Don’t Properly Address Climate Change
- This Is The Beginning Of The End Of The Fossil Fuel Industry
- 3 Strategies To Make Cities Stronger Against Climate Change
- The World Isn't Spending Nearly Enough To Combat Climate Change -- Not Even Close
Also on HuffPost: